I can take the shapes of many things.
In the forms of birds or ships I'm most commonly clad.
Many people watch me.
I can be either good or bad.
From water, I am bright and happy.
From miasma, I am dark and sad.
One can walk through me when the day is gloomy,
or I can block one's view on a sunny day.
During winter I bring good cheer,
during summer I take it away.
I have been given as a name to humans,
I have been called a bad omen on a traveler's way.

I am greater than a man, yet smaller than an ant. I will live eras longer than a man, yet my life is mere blink of an eye, flash of light. Yet I will be known in the distant places long after my death, as my echos travel through this world. My memory reaches from the beginning of the world to the end of it, where all melts or stretches to a new world. What am I?